Explosive engine



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M. C. KESSLER ExPLosIvE ENGINE @ecco 'Ml Original Filed Dec. 21. 1917 Patented @en ill, 11923,.

entren 'srarns Ldl PATENT @FFHQQ lllllAR'IIN C. KESSLER, 0F DETROIT... MICHIGAN, ASSIGNOR TO KESSLER MOTOR COM- naar, Or nnnvnn, COLORADO,

EXPLOSIVE ENGINE.

Application led December 21, 1917, SerialNo. 208,275. Renewed July 2e, 1.923.

in explosive engines of the internal combustion type. The present invention is a super-charge engine of the four-cycle type, in which air is admitted and compressed in the crank case and transferred into the cylinder above the piston approximately at the end of its inward stroke, meaning the stroke toward the crank shaft, said admission and transfer of air'beingwithn the control of the operator while the engine is in operation, and this control is accomplished'by means of valves in the admission and transfer ports. Another feature of thisinvention is a means whereby both the normal cylinder in take and the crank case intake and transfer may be under` one and the same control, and consequently regulated simultaneously.

rllhe accompanying drawing is a sectional vview through one cylinder and crank-case,

with minor parts in elevation.

A, represents the cylinder, and the numeral 1 the crank-case; 2 is the piston. and 3 the connecting rod extending from the crank i to the piston in the usual manner.

rllhe numeral 5 indicates a b -pass from the crank-case 1, to the cylin er Afrom which airdischarges into the cylinder through ports 6, when cleared bythe piston at the end of the instroke.

Port 7, admits air to the crank-case when cleared by the piston on its outstroke.

The passage of air through by-pass 5 is controlled by a valve 8 in this by-pass, and this valve is Within control of the operator.

rllhe cylinder intake pipe 9, is provided with a valve 10. 'Port 7 is provided with a valvell, and valves 8 and 10 are connected by connecting-rod 13, and valves 10 and 11 are connected by connecting-rod 14, so that c these valves may Operate together, thus regulating the air supply from the crank-case in harmony with the supply of fuel. In other words, these valves may be simultaneously operated, and under a single control from the operator of the engine.

With each Outward stroke of the piston,

'the port 7 is opened to the crank-case, re?

storing normal atmospheric pressure therein. 0n the instroke, the port 6 is first closed by the piston, then the port 7, and consequently the air within 'thel crank-case is compressed and discharged into the cylinder directly over the head of the piston approximately at the end of the instroke of the piston, (as shown in the drawing), and a greater or le quantityl of this crank-case air is injected into the cylinder, and a greater or less amount of fuel fed in through the intake pipe 9 accordingly as the valves 8, 10, and 11, are opened to a greater or less degree by the operator.

The numerals 15 and 16 represent the usual intake and exhaust valves, and 17 is the spark-plug located at the outer endl of the cylinder.

I c aim:

l. A four-cycle engine having a cylinder, crank case, piston, the cylinder having inlet and exhaust valves, lthe crank case having inlet and transfer ports with valves therein, a fuel controlV valve for regulating the admission of fuel to the cylinder inlet valve, and means for simultaneously operating the fuel control valve and the crank-case inlet and transfer port valves.

2. A four-cycle engine having a cylinder, crank case, piston, the cylinder having inlet and exhaust valve/s, the crank case having inlet and transfer ports, said transfer port having a valve therein, a fuel control valve for regulating the admission of fuel to the cylinder inlet port, and meansfor simultaneously operating the fuel control valve and the transfer port valve.

3. A four cycle internal combustion engine comprising a cylinder, a closed crank case, a piston working in the cylinder and valve mechanism operated by said piston for inducing acharge of air into the crank case upon the compression stroke of the piston and for trapping the same within the crank case during the power stroke of the piston Vand for admitting said compressed charge above the piston upon the exhaust stroke thereof for scavenging the exhaust gases, means governing the admission of the charge to the cylinder and means operating in conjunction therewith for governing admission of the charge to the crank case.

a. A four cycle internal combustion engine comprising a cylinder and a closed crank case, a piston Working in the cylinder and valve mechanism operated by said piston for inducing a charge of air into the crank case on the exhaust stroke of the Vpiston and Ifor trapping the same Within the crank case during the intake stroke to thereby effect compression of said air in the crank case during the intake stroke of the piston and for then admitting said compressed charge of air above the piston during the compression stroke thereof to thereby combine said compressed air charge with the charge taken in on the intake' stroke of the piston, means governing the admission of the charge to the cylinder and means operating in conjunction therewith for governing admission of the charge to the crank case.

5. A four cycle internal combustion engine comprising a cylinder, a closed crank case, a piston Working in the cylinder and valve mechanism operated by said piston for inducing a charge of air into vthe crank case upon the compression stroke ofthe piston and for trapping the same Within lthe crank case during the power stroke of the piston and .for admitting said compressed charge above the piston upon the exhaust stroke.

thereof for scavenging the exhaust gases and vmeans for automatically proportioniiig the charges admitted to the cylinder and tol the crank case respectively.

6. A four cycle internal combustion eiigine comprising a cylinder and a closed crank case2 a piston Workingl in the cylindei` and valve mechanism operated thereby for inducing a charge into the crank case on the compression stroke of the piston and for trapping said charge in the crank case upon the power stroke of'the piston to thereby compress said charge Within the crank case,

'and to admitx said compressed charge above the piston upon the exhaust stroke thereof to therebyscavenge the exhaustgases,y said valve mechanism being further constructed to induce a second charge in the crank case upon the exhaust stroke of the piston, tol

means for independently controlling the` flow through one of said ports.

7. A four-cycle internal combustion engine comprising a lcylinderand a closed 1 crank case, a piston working in the cylinder and valve mechanism operated by said pislton for inducing acharge into the crank case on the exhaust stroke of the piston and for trapping the same Within thecrank case during the intake stroke to thereby effect compression of said charge in the crankcase during the intake stroke of the piston and for then admitting said compressed charge abovethe piston during the compression stroke thereof to thereby combine said compressed charge with the charge taken inon the intake stroke ofthe piston, a throttle for the engine and means for admitting or increasing the charge admitted to the crank case as said throttle is openedg'.

A four-cycle internal combustion engine comprising a cylinder, a crank case, a .y

piston Working in the cylinder and Valve mechanism operated by' said piston for inducing a charge into the crank case on the exhaust stroke of the piston and for trapping and compressing the samewithin the crank case during the intake stroke of the piston and for admitting said compressed charge above the piston -on the compression stroke thereof and means' for automatically proportioning the charges admitted to the cylinder and to the crank case respectively.

In testimony whereof I aiix my signa'- ture.

i MARTIN C. KESSLER. 

